deepseek-ai/deepseek-harness · error · Error

file_path must be a non-empty string

Error message

file_path must be a non-empty string

What it means

Error "file_path must be a non-empty string" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/fs/tool-fs/src/write.ts:26

import type { Context } from '@deepseek-ai/cordis'
import { defineTool } from '@deepseek-ai/dsh-tools'
import type { DiffCallView, DiffResultView, ToolResult } from '@deepseek-ai/dsh-tools'
import type { FsWriteOutcome } from '@deepseek-ai/dsh-fs'
import type {} from '@deepseek-ai/dsh-fs'
import type {} from '@deepseek-ai/dsh-system-prompt'
import { computeHunkDiffs, diffsFromMeta } from './diff.ts'
import { remediateFsError } from './error.ts'
import { sessionResolveOptions } from './session-cwd.ts'
import type { FsSandboxController } from './sandbox.ts'

/**
 * Validate value constraints the schema DSL can't express: only a non-blank
 * `file_path` — an empty `content` is legitimate (it writes an empty file).
 * @param args - the schema-validated raw tool arguments.
 * @returns the camelCased input; `content` passes through untouched.
 */
export function parseWriteArgs(args: { file_path: string; content: string }): { filePath: string; content: string } {
  if (args.file_path.trim().length === 0) throw new Error('file_path must be a non-empty string')
  return { filePath: args.file_path, content: args.content }
}

/**
 * Format a write outcome as one model-facing text block body.
 * @param displayPath - the backend-resolved path rendered in the envelope's `<path>` element.
 * @param outcome - the write outcome; its `operation` selects the Created/Updated wording.
 * @returns the model-facing confirmation envelope (no file content is echoed back).
 */
export function formatWriteOutput(displayPath: string, outcome: Pick<FsWriteOutcome, 'operation'>): string {
  const verb = outcome.operation === 'create' ? 'Created' : 'Updated'
  return `<path>${displayPath}</path>
<type>file</type>
<content>
${verb} file
</content>`
}

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/fs/tool-fs/src/write.ts:26 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/f1aed9e382324289. Report an issue: GitHub.